Machine for countersinking pipe couplings



Oct. 9, 1928. 1,686,841

A. BRIESE ET AL MACHINE FOR COUNTERSINKING PIPE couPmNGs Filed march 18, 1926 2 sheets-sheet 'l OCt, 9, 1928. 1,686,841

A'. BRIESE ET AL MACHINE FOR COUNTERSINKING PIPE coUPLINGs Filed March 18, 1926 2 Sheets-Sheet 2 @i155 fmw TTO NEY Patented @et 9,' 1928.

aire STATES' erna-En Bainsnonwnnnmivcr, Aivnmissnizr. CAnLow, Vor BoGGs RUN, WEST VIRGINIA.

MACHrNE non CONTERSINKING PIPE conrniivesf Application filed March 18, 1926. Serial No. 95,629.

rIhis invention relates to an automatic countersinlring machine for pipe couplings and similar articles and has for its main object'the provision of such a inachinel that shall operate with a high output. rlhe invention also contemplates certain features of` arrangement of parts which shall malr'e for Simplicity in construc-V construction and tion and eiliciency in operation.

rlhe invention comprises generally a machine having a holder forV worl; piecesA such as pipe couplings whichare usually countersunk Vbefore being tapped, cutter heads that carry cutters for countersinlringl movable toward and away from the holder, a chuteor stacker that delivers the worl; pieces to the.

holder, and devices for moving the cutter A feature of the invention is a device for centering each work piece vin the holder so that where each end of the work piece is countersunk simultaneously the countersinlr will be equal in both'ends.k Another feature is the ,provision of simple means for moving the cutter heads and for actuating the holder for the work pieces.

Further features of construction and `operation will hereinafter appear., For a com-vr plete understanding of the invention reference is to be had to the following description in connection with the accompanying draw- Figure 1 is a front View in elevation of the machine; f y y Figure 2 is a longitudinal sectional view ofthe work piece, such as a pipe coupling with the endsl countersunk; y Figure 3 is a fragmentary view with parts' removed and broken away, showing the work piece chute, the holder or gripping device lfor the worlr'pieces, and the device forY centering the work piece;

Figure 4 is a side view in elevation of they machine Figure 5 is a fragmentary view, partly in and with parte showing the holder or gripping device and the actuating m chanism therefore and l f Figure 6 is atop view 'of the'centering device.

Referring to the'` drawings in detail, the

reference character 10 designates lthe machine frame having the upper bed 11 with dovetail sides, as shown more clearly by.

Fig. 4. lSlidably mounted on the bedv 1-1are cutterheads, designated generally by the reference characters 12 and' 13. Each of these cutter heads comprises a dovetail base 14, and upstanding bearings k15 and 16. A

shaft lr'vand a pulley 18 are locatedbetween each .pair of bearings 15 and 16, the shaft 17 being journaled in these bearings and rotated by the pulley 18 carried by the shaft. A twist drill cutter isv secured to rotate with the shaft, thesecuring means being any suitablel device (not shown). The cutter isr designated by the numeral 19 and it will be understood that any suitable cutter may be employed.

The cutter heads 12 and 13 are moved toward each other for the countersinking operation and away fromeach other after this operation is completed. The means for moving these cutterheads comprises a shaft 2O ournaled in the frame 10 having bearings 217 as shown more clearly by Fig. 4. The

" shaft hasr secured thereto at one 'end thereof a driving pulley 22.

2O vnear each end thereof is a lpinion 23,V

Secured to the shaft shown inl dotted lines in Fig. land in full lines in Fig. 4. These-pinions 23 mesh with anddrive gearsy 24 carried by Astub shafts mounted in bearings in the ends of the frani'e. Fastened to these gears 24 in any suitable manner so. as to rotate therewith are `cam members 25 having the continuous cam grooves 26. Rollers 27 are fittedto the cam grooves 26 and are secured to brackets 28 which are connected to the outer bearings 15 of thecutter heads 12 and 13.. It .will lbe readily understood thatk as the cams25 are rotated by the gears 24, the rollers27 will be moved thereby for a portion'of the rotation of the cams to thereby move ythe cutter heads."

It will be noted that the cams have their grooves homologously arranged so that away from each other.` It will beunderstoedthat the distance through Wh.. vthe .the holder' scour:

in gs,

e 8O is arranged to deliver work pieces, such as pipe couplings 31, to a holder or gripping device comprising, preferably, a stationary part 32 and a movable part 33, as

shown by i ig. This holder is carried by plates 34 which are ,ecured to uprights 35 by pins or rods 'the upright supports 35 are bolted to the bed 11 of the machine frame 10. The stationary part or aw 32 of y held in. place on the plates 34 by the bolt 37 and may be adjusted by the aid of thebolt The movable Jaw is adapted vto slide on the plates 34 and is held in place by the vupper guide plate` 39. lt will be noted that the holder is positioned between the cutter heads 12 and 13,

and that the movable j aw 33 is adapted for vmovement transversely of the machine bed 11 and the cutter headsa rlhe movable jaw 33 is connected by a link 40 pivoted thereto` as 41, to 'one end 42'of one part of a bellcrank lever 3, the other end of the same part of this lever being pivotally connected at 44 to a block 45. The block 45 it' iixedly secured to the plates 34 by the bolt 4G, but may be moved to ad'usted position by the aid of the bolt 47. rl`his linkage forms pa "t of a mechanism for actuating the holder,

more particularly the movable jaw 3%, as

will hereinafter appear.

Referring to Figs. 1 and 4 of the drawthe reference character 4S designates a gear wheel that meshes with one of the gears 24 and is thereby actuated to yrotate a shaft 49 that is journaled in bearings 50 and 51 associated with the machine frame 10. Secured to the shaft 49 are two cams 52 and y53 which bear on rollers 54 and 55, -rel spectively, of a follower member 56 which is slotted, as at 57, for movement transversely ofthe shaft 49. The cam 52 bears on the roller 54 to raise the follower 56, and the f cam bears on the roller 55 to lower the follower, at the proper times. In both cases, the action of the cams is positive. rlhe upY per end of the follower 56 is pivotally connected, as at58, intermediate the length of a link 59, one end of which is pivotally connected to a lug 61 at 60. vrlhe other end of the link 59 kis pivotally attached at 62 toone end of an adjustable *linkr G4 comprising the relatively adjustable parts 63 and V65, the latter being attached to the part 66 of the bell-crank lever 43.

A feature of the invention is a centering Referring more particularly to Figs. 3, 4 and 6, a standard 67 has at the upper part there` yof a bearing 68 for a short shaft 69at each.

end on which is secured, as by V.a setV screw 70, avfinger 71. To a lug 72 on one of the fingers "il is secured one end of a coil spring 73 the other end ofvwhich is fastened to an upstanding rod 74. 'lhe spring 73 urges the fingers towardthe pin 7 5 vfixed to the bracket 67 and this pin 75 acts as a stop. A roller 76 is'mounted at the top of one of the lingers 71. rlhis roller is struck by Va bar 77 as the cutter heads advance toward each other to move the fingers against the tension of the spring 73. A Y

The operation of the machine will be read ily understood. The cutter heads are ad vanced toward each other when the shaft 2O is rotated to thereby rotatev the pinions23 which mesh with the gears 24 and rotate the latter. hegears 24 actuate the cams 25 which, at a certain portion of the rotation thereof, more the cutter heads 12 and 13 toward each other. dust before the cutters are moved to operative position', the ljaw 33 of "le {.lv toward `the stationary Jaw 32 through the linkages Vactuated by the cam'follower 55 which is raised by the cam 52 that is rotated by the shaft 49 drivenr by the gear 48 that holder or gripping device is moved is rotated by a gear 24 meshing therewith. A.

A work piece 81, which has dropped from the delivery chutev 29, as shown in dotted lines in 3, is in position to be pushed by the jaw 33 Ainto engagement between the latter and the jaw y As this work piece is being gripped by the holder, the fingers 71 act to center it as clearly shown by Fig. 6, so thatV as the cutters subsequently operate both ends of the work piece will have equal countersinks. With the jaws of the holder gripping the work piece, the cutters advance to position for the cutting operation, but just before this occurs, a bar??4 strikes the roller 76 of the centering device and moves the fingers thereof out of the path of the cutters.

`After the cutters have performed their operation, they are withdrawn by the actionA of the cams 25, and at about the same time,

vthe cam 53'lowers the follower 56 'which actuates the linkages connected to the 33 to move 'the latter away from the jaw 32 to thereby releasel the work piece just operated on by the cutters. vAs the jaw 38 is withdrawn, the work piece falls through that as the work piece is Vpushed over the opening 78, it is caught between the jaws of the holder before it can fall any appreciable amount. It. will be noted. that byV theV arrangement of the linkage shown, particularly the bell-crank lever and the links connected thereto, a comparatively small movement of the jaw 33 aords an increased gripping action by the jaws of the holder.

It will be understood that certain details of construction and the arrangement and combination of parts may be altered; that the machine may be used in other relations than that hereiny set forth, and that certain parts may be omitted9 without departing from the invention as set forth in the vappended claims. t

`What is claimed is-v v l. In a machine of the kind described,

movable cutter heads, a holder Vtor work pieces7 means for moving said cutter heads toward and away from said holder, means for actuating said holder in timed relation to the movement of the cutter heads', pivoted centering members for positioning a. work piece in the holder, and means for withdrawing said positioning members from operative position in timed relation to the movements of the cutter heads.

2. In a machine of the kind described` movable cutter heads, a holder tor work pieces positioned between said cutter heads and comprising a stationary part and a movable part, means for moving said cutter heads simultaneously toward and away from said holder, an intermittently operated een? tering device associated with said holder, said device comprising pivoted members adapted to be actuated in unison relative to the opposite ends of the work piece, means for actuating sai-d members in timed relation tothe movements of the cutter heads and means for moving said movable part of the holder toward andaway from its stationary part. 3. In a machine of the kind described, a

`movable holdermember, a bell-crank lever4 connected to said member, an adjustable link connected to said bell-crank, and cam' means including a slotted follower and rollers borne by said rfollower for actuating said link to move said holder member in opposite directions. i

v 4. In a machine of the kind described;V

movable cutter heads, a holder having a stationary part and a movable part, a centering 'device associated with saidstationary holder part, `means for moving said cutter heads and said movable holderfmember, and means associated with one of said cutter heads for withdrawing 'said centering kdevice from operative position in timedy relation to the movement of the cutter heads.

5. In a machine of the kind described,k av frame, cutter heads mounted for 'movementon said frame, a` work piece delivery chute mounted on the frame, a holder having a movable member mounted for sliding movement under said chute, said frame having an opening under the holder and offset from the chute, means for moving said cutter heads,`

and means iior movingsaid holder member ALFRED Baisse. RUSSELL oALLow.

to secure a work piece from the delivery 

